Dayid feiedheim of new yoek



(No Model.)

D. FRIEDHEIM.

FIRE LADDER.

No. 261,843. Patented Aug. 1, 1-882.

WITNEEEES= INVENTDR: A amjx J UNITED STATES PATENT OFFICE.

DAVID FRI-EDHEIM OF NEW YORK, N. Y.

FIRE-LADDER.

SPECIFICATION forming part of Letters Patent No. 261,843, dated August 1, 1882.

Application filed April 6, 1882. (No model.)

To all whom it may concern Be it known that I, DAVID FRIEDHEIM, of the city of New York, county and State of New York, have invented a new and Improved Fire- Ladder, of which the following specification is made to lock automatically; and, finally, in extending each ladder'above its connection to the succeeding ladder, all as hereinafter more fully described.

1n the accompanying drawings, Figure l is a longitudinal vertical central section of my improved fire-ladder, showing it extended. Fig. 2 is an end view of the same.

Similar letters of reference indicate corresponding parts in both figures.

In the drawings, the letter A represents a truck consisting of a square frame mounted upon wheels. Upon this truck are placed the lowermost members, a a, of a system of lazytongs. These members are mounted upon wheels, and may be raised by a drum or drums, 'i, and ropes j, or in equivalent manner, the wheels traveling in proper guides.

11 I) c c d d are the members completing the set of lazy-tongs, such members diminishing inlength toward the top. Of each set one member, a b c d, is a ladder, while the other member, a b c d, is a hollow frame embracing said ladder. The several ladders form a continuous series, as shown. The three lowermost ladders, a b c, are extended a short distance above their connection to the succeeding ladder, so that a party mounting the system may pass beyondthe connections and then turn around to pass from one ladder to the other. of course any suitable number of ladders may be used instead of thefour pairs shown in" the drawings.

In order to prevent the apparatus from collapsing, it is provided with one or more rods, 0, pivoted to one of the central rungs, and provided with a hook at its lower end, which engages the central rung of the ladder directly below. The central rungs should for this purpose be made of additional strength.

Each rod 0 may be made to lock automatically when the apparatus is raised. This is effected by means of ropef, connected to rod 6 and to the ladder, to which it is pivoted, and passing over a pivot, g, connectin g respectively the frames a b, &c. By this arrangement; when the apparatus is raised the rods 0 are gradually swung into a vertical position.

Each of the rods 0 may be provided with a footboard, h, by which access may be had to windows of the building hel'ore which the apparatus is mounted.

When the apparatus is to be lowered the rods e are first unhooked before the lazy-tongs are swung into a nearly horizontal position.

I claim as my invention- 1. The combination of the mounted lazytongs a a b b with rod 0, pivoted to a central rung, and provided with a hook at its lower end to engage the succeeding cenitral rung, substantially as herein specified.

2. Thecombination of the mounted lazytongs a a b b with pivoted rod 0, having hook at lower end, and having rope fpassing over pivot g, substantially as specified.

3. The combinatiolrof the frames. ab c with the ladders a b 0, each of the ladders being extended above its connection to the succeeding ladder, substantially as and for the pur- 

